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Alumina Substrate

Al2O3 Ceramic Substrate

The purity of alumina substrates used in the electronics industry is about 96%. Alumina ceramic substrates have the advantages of abundant raw material sources, relatively low prices, good wear resistance, excellent electrical insulation performance, good thermal shock resistance and chemical corrosion resistance, high dimensional accuracy, and good bonding with metals. It is a ceramic substrate material with good comprehensive performance.
Edgetech provides alumina ceramics according to demand, and the size can be customized.

Alumina Ceramic Performance

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Item Unit Al2O3
Physical Property
Color   Ivory
Density g/cm3 3.7-3.9
Purity % 95~99.8
Gas Permeability   0
Water Absorption   0%
Mechanical Properties
Vickers Hardness GPa 12.3-17.2
Flexural Strength MPa 300-380
Compressive Strength (HV0.5) MPa 2000-2350
Elastic modulus GPa 270-380
Fracture Toughness MPam1/2 3.5-4
Thermal Properties
The Max Working Temperature ℃ 1650
Thermal Conductivity at room temperature W/(m·K) 20-32
Coefficient of Thermal Expansion 10-6/℃ 6.5-7.2
Thermal Shock Resistance △T℃ 200
Electrical Properties
Dielectric Strength KV/mm 10-15
Dielectric Constant   9-10
Dielectric Loss Angle(1MHz)   0.0002-0.0003
Volume Resistivity Ω·cm >1014

*The above information is for comparison only. The exact characteristics will vary depending on the manufacturing method.

  • Boron Nitride Tube
  • BN Tubes

Typical properties of Alumina ceramics
-Good insulation performance
-Excellent high-temperature resistance: Stable in a high-temperature environment, not easy to deform, ablate oxidize, etc
-High strength and hardness: Can withstand certain mechanical pressure and impact, not easy to break or wear
-Excellent chemical stability, can operate stably in a chemically corrosive environment
-Good processing performance: Can achieve complex geometric shapes and high-precision dimensional requirements

Applications of Alumina Ceramic Substrate
-Power Electronics
-Electronic packaging
-Hybrid microelectronics
-Multi-chip modules, etc.
Packing of Alumina ceramics

Alumina substrates use appropriate outer boxes and internal buffer materials; Some components are also vacuum-packed.

Edgetech Industries LLC7938 Liberty Way, Parkland, FL 33067 USAsales@edge-techind.com